ENDOCRINE ORGANS AND RESPIRATORY SYSTEM
ENDOCRINE ORGANS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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produces a hormone (melatonin) that helps you go to sleep
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produces a hormone that stimulates the immune response
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produces a hormone that increases blood
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produces a hormone that deceases bone calcium levels
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Detailed explanation-1: -Melatonin is the only known hormone synthesized by the pineal gland and is released in response to darkness hence the name, “hormone of darkness” [10]. Melatonin provides a circadian and seasonal signal to the organisms in vertebrates.
Detailed explanation-2: -Melatonin helps the body control sleep patterns the day and night cycle (the internal body clock). Melatonin levels are highest before the time you usually go to sleep and lower during the day.
Detailed explanation-3: -Melatonin is produced by various tissues in the body, although the major source is the pineal gland in the brain. Melatonin (blue) is produced naturally from the amino acid tryptophan, by the pineal gland (purple) at night-time.
Detailed explanation-4: -Your pineal gland secretes the highest levels of melatonin during the night and minimal amounts during the day.
Detailed explanation-5: -It is a pinecone-shaped small gland located in the middle of the human brain in between the two hemispheres in an area called epithalamus. It was once known as “the third eye”. It is the major site for melatonin secretion, which regulates the body’s internal clock (Circadian rhythm).